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Determining the critical value of F. For each of the following situations, state how large the F statistic needs to be for rejection of the null hypothesis at the 0.05 level.
(a) Compare 3 groups with 5 observations per group.
(b) Compare 4 groups with 4 observations per group.
(c) Compare 4 groups with 8 observations per group.
(d) Summarize what you have learned about F distributions from this exercise.
You are running a chi-squared test. You have 2 groups with 3 characteristics each, what would your critical value be with an alpha of .025?
What is the difference between the sal and compa measures of pay - What conclusions can you make about the issue of male and female pay equality?
If a population is known to be normally distributed with m = 250 and s = 40, what will be the characteristics of the sampling distribution for x based on a random sample of size 25 selected from the population?
A general contractor is considering purchasing lumber from one of two different suppliers. A random sample of 12 "2x4's" of a certain length of each board is measured.
In an effort to control costs associated inventory management, a study was conducted on the relationship between sales (X, in billions of US dollars) and inventory levels (Y, in billions of US dollars), with a random sample of size 20. You are ass..
An observational rating scale is being developed to rate the classroom performance of first-year teachers, and experienced classroom teachers are asked to examine the items on the rating scale to see if they are relevant to effective performance.
As part of a long-term study of individuals 65 years of age or older, sociologists and physicians at the Wentworth Medical Center in upstate New York conducted a study to investigate the relationship between geographic location and depression.
All but one of the following statements contain a blunder. Which one does not contain a blunder
Use a four-period moving average to calculate MFE
You don't have a population standard deviation but you have sample data. Calculate a sample mean and standard deviation and use the sample standard deviation value to complete the inferential test.
question berdines chicken factory has several retail stores. when interviewing applicants for server positions the
lloyds cereal company packages cereal in 1 pound boxes 16 ounces. a sample of 36 boxes is selected at random from the
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